Simple: create a SELECT statement which uses AND clauses in the WHERE statement:
SELECT ... WHERE studentName = 'John' AND fatherName = 'Mike'
This causes the DB to only return rows where both conditions are true. All you have to do is replace the fixed strings with the text box content.
But do note two things:
1) Since the StudentID will be unique (or it isn't an ID value, and you have something very, very wrong in your system) if you include that in your WHERE criteria via an AND you will only get one row or none - the rest of the criteria are pretty much irrelevant.
2) Never concatenate strings to build a SQL command. It leaves you wide open to accidental or deliberate SQL Injection attack which can destroy your entire database. Use Parametrized queries instead. Google will show you how to do that (but it'll be slightly different depending on exactly what you are using to access the DB, so I can't give you an example).
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